1. Department of Otolaryngology‐Head and Neck Surgery University of Rochester Rochester New York U.S.A.
2. Otolaryngology and Facial Plastic Surgery Associates Fort Worth Texas U.S.A.
3. Hilger Facial Plastic Clinic Minneapolis Minnesota U.S.A.
4. Division of Facial Plastic Surgery in the Department of Otolaryngology University of Minnesota Minneapolis Minnesota U.S.A.